If you want to work on 16th note accents Stick Control by G. L. Stone, as always, is a good way to develop this skill. As you know pages 5 to 7 of the book have no accents, the first part of this series of lessons refers to the single accent combinations.
This is a good exercise to improve your timing and work on sticking, especially when the accent is on the upbeat of the 16th note. In the video below I show you how can approach this workout: playing the exercises 1 to 4 with four different accent combinations.
You can work on the exercise sequentially playing the first column (Fig. 1, ex. 1-12) with the combination of the first accent (repeating the single line at least two times) and then moving on with the second combination.
Stay tuned for the next part, and remember to download the PDF of the lesson (4 pages).